Back to results
US 11,028,649 B2Granted
Raise boring head for rotary boring
AssigneeSandvik Intellectual Property AB
InventorJoona Loikkanen
Life of this patent
Estimating the term…
Abstract
A raise boring head for rotary boring in rock having a main body mountable at a drive shaft in which a mount face provides a supporting surface for a plurality of saddles that mount, in turn, respective roller cutters. At least one guide block is attached to the main body to project upwardly from the mount face and includes at least one guide face to facilitate the transport of cut material away from the mount face.
Claims10
A raise boring head for rotary boring in rock comprising:
- a body arranged to be mounted at a drive shaft, the body having a planar mount face extending radially outward from the shaft;
- a plurality of channels extending axially through the body from the planar mount face to a rear face of the body to divide the planar mount face into a plurality of spokes, each of the plurality of spokes having a first end adjacent the drive shaft;
- a plurality of saddles provided on the spokes of the mount face adjacent the channels, the saddles being arranged to rotatably mount respective roller cutters at the body;
- and
- at least one guide block attached to at least one of the plurality of spokes and projecting from the planar mount face at a position between the first end of the at least one spoke and a respective saddle so as to be adjacent or spaced apart from the saddles, the at least one guide block having at least one guide face aligned transverse to the mount face and arranged to transport cut material away from the mount face, wherein the at least one guide block is separate from and formed non-integrally with the saddles.
2 more elements
The boring head as claimed in 1, wherein the mount face extends generally perpendicular to the drive shaft.
Dependencies are inferred from the claim text.